84 citations · 550 across the 31 of their papers we have counts for
8 papers · 1 filter
Non-equilibrium transport through a disordered molecular nanowire
P. Thiessen, E. Diaz, R. A. Roemer +1
We investigate the non-equilibrium transport properties of a disordered molecular nanowire. The nanowire is regarded as a quasi-one-dimensional organic crystal composed of self-ass…
Magnetoplasmons and SU(4) symmetry in graphene
Andrea M. Fischer, Rudolf A. Roemer, Alexander B. Dzyubenko
We study magnetoplasmons or neutral collective excitations of graphene in a strong perpendicular magnetic field, which can be modelled as bound electron-hole pairs. The SU(4) symme…
Localized Collective Excitations in Doped Graphene in Strong Magnetic Fields
A. M. Fischer, A. B. Dzyubenko, R. A. Roemer
We consider collective excitations in graphene with filled Landau levels (LL's) in the presence of an external potential due to a single charged donor D+ or acceptor A- impurity. W…
Scaling at the Energy-driven Metal-Insulator Transition and the Thermoelectric Power
Alexander Croy, Rudolf A. Roemer
The electronic properties of disordered systems at the Anderson metal-insulator transition (MIT) have been the subject of intense study for several decades. Thermoelectric properti…
Compressibility in the Integer Quantum Hall Effect within Hartree-Fock Approximation
Christoph Sohrmann, Rudolf A. Roemer
Electron-electron interactions seem to play a surprisingly small role in the description of the integer quantum Hall effect, considering that for just slightly different filling fa…
Fluctuating Hall resistance defeats the quantized Hall insulator
Philipp Cain, Rudolf A. Roemer
Using the Chalker-Coddington network model as a drastically simplified, but universal model of integer quantum Hall physics, we investigate the plateau-to-insulator transition at s…